[Soapy]

It can be sort of a big deal when people are dishing out 100+ damage with a standard Heavy Tackle, or when they're chucking you through cinder tiles with Lazarus Wind.

It makes Monks pretty much immune to Evasion, since they can just Dense Thunder you in the face (although I'm still not sure if that damages before or after).

It also makes the standard Celglas combo (Rising Kick, Axe Kick, Face Stomp) even more faceroll (again, assuming it damages before).

I'd say making it apply after damage would be a good idea, for consistency if nothing else (since that's how things like Guard Break work), and in the case of knockdown skills that include a knockback (Ice Skate, Heavy Tackle, Lazarus Wind, Sharenzan), it probably shouldn't apply the knockdown until their movement completes.